Volunteers

In Metal Gear Solid V: The Phantom Pain, volunteers are soldiers that join the ranks of Diamond Dogs on their own accord, as apposed to prisoners or enemy combatants that must be Fultoned back to Mother Base and (particularly later in the game) held in the brig until Ocelot convinces them to join. The rank of randomly generated staff members that the player receives is mainly influenced by the player's level of heroism, though the amount and type are also influenced by other factors such as mission completion speed.[1] Unique volunteers are given at scripted points in the game.